4P 100A AC 220V 230V 50/60Hz Din Rail Household AC Modular Contactor Switch Controller 4NO/4NC/2NO2NC DIY Smart Home House Hotel 4P 100A AC 220V 230V 50/60Hz Din Rail Household AC Modular Contactor Switch Controller 4NO/4NC/2NO2NC DIY Smart Home House Hotel. Sale price : $29.88 Category : Home Improvement